Abstract p-Tolylsulfonyldiazomethane and ethyl diazoacetate react smoothly with sulfuryl chloride and various ethers (Tables I and II) producing α-alkoxy-α-chloro-sulfones and α- alkoxy-α-chloroacetates in good yields. The reaction is proposed to proceed via a nucleophilic reaction of the ether with the diazonium ion XCH (Cl) N 2⊕(where X is p-CH 3 C 6 H 4 SO 2-or C 2 H 5 OOC-) which is formed by an electrophilic reaction of Cl⊕(from ...